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J Am Chem Soc. 2010 Sep 1;132(34):11856-7. doi: 10.1021/ja103843d.

Self-doped Ti3+ enhanced photocatalyst for hydrogen production under visible light.

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Department of Chemistry, University of California, Riverside, California 92521, USA.


Through a facile one-step combustion method, partially reduced TiO(2) has been synthesized. Electron paramagnetic resonance (EPR) spectra confirm the presence of Ti(3+) in the bulk of an as-prepared sample. The UV-vis spectra show that the Ti(3+) here extends the photoresponse of TiO(2) from the UV to the visible light region, which leads to high visible-light photocatalytic activity for the generation of hydrogen gas from water. It is worth noting that the Ti(3+) sites in the sample are highly stable in air or water under irradiation and the photocatalyst can be repeatedly used without degradation in the activity.

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